Improvement in water-meters



NITED STATES firme,

PATENr IMPROVEMENT IN WATR-VIETERS.

Specification forming part of Letters Patent No. 33A75, dated October'15, fl SG1.

To @ZZ whom it may concern:

Be it known that I, BENJAMIN S. CHURCH, ot' the city, county, and Stateof New York, have invented a new and Improved Tater- Meter; and I dohereby declare the following to be a full, clear, and exact descriptionof the same, reference being had to the accompany-'ing drawings, makinga partof this speciiication, in whieh- Figure I represents my improvedmeter by a longitudinal section taken at the line m Fig. 2. Fig. 2 is atransverse sect-ion of the same, taken at the line y y of Fig. l; Fig.3, a horizontal section of the same, taken at the line ze of Fig. l.

Similar letters of reference indicate correspondin g parts in theseveral figures.

This invention consists in arranging within a cylindrical case twoplungers fitted to work one within and independent ot' the other in isuch a manner as to leave a passage for the water to flow in and out ofthe meter in all positions ot' the plungers and to prevent any Waterfrom passing through the meter without being measured.

To enable oth rs skilled in the art to make and use my invention, I willproceed to de scribe its construction and operation.

A represents the cylindrical case of the ineter divided into threecompartments B B B by the disk-rings C C, which are bolted between theflanged portions of the cylinder and through which the hollow plunger Dis fitted to work. The plunger D is composed of two cylinders furnishedeach with a iiange (t at one end, which when placed in line a distanceapart equal to the length ot' one of the cylinders are connectedtogether by screw-rods l;

` b. One of these rods is lfitted to slide back and forth with theplunger between two guides c c, by which means the plunger is preventedfrom turning independent ot' the outer case ot the meter.

E is`also a plunger Iitted to work within the plunger D through tworings or bushings d rl, attached on the inner side oi' the plunger D insuch a manner as to cause it to act as a cylinder for the plunger E,while it (E) actuates the sliding valve. 'IheplungerE is furnished onits underside with two oblong openings e e, so arranged that at the endot each stroke one ot them opens into one of the passages ff in thedisk-rin gs for an outlet, while ythe other opens into the centralcompartment or chamber B for an inlet to operate the pliniger E.

F is a sliding valve furnished with a projection t/ on its upper sideand fitted to slide over the openings to regulate the outlet and inletlow of water to and from the end compartments B B of the meter. Thisvalve is actuated by means of a iiange it, formed on the outside andmidway of the plunger E, which as the plunger moves back and forth inthe plunger D at the end of each stroke strikes one of the tappets 7c7c, causing the tappet on the opposite end of the rod to move the valve.The sliding rod G is attached to the plunger D and is moved by it to asuitable position for the ange on the plunger E to strike one of thetappets and thus move the valve. The tappets k lo are'of disk form andscrewed on the sliding rod, and by simply screwing them toward or fromeach other the meter may be adjusted to measure more or less within acertain limit, as it causes the plunger Ey to make a correspondinglylengthened or shortcned stroke.

I I are water-passages, through which a com# munication between each ofthe end compartments B B and middle compartments B is alternately formedby the sliding valve..

J is an outlet or discharge opening, which by means of the sliding valvecommunicates with one ol' the end compartments of the case while a communication is formed between the other end and middle compartment B.

H is the main pipe, through which the water passes into the meter, and Iis the discharge.

The operation is as follows: The water first enters the middlecompartment B through the pipe fl-I. The pressure being in the directionof the radii, the plungers are not aitected by it. It then Vpasses underone side of the sliding valve, through one of the passages I into one ofthe end compartments B B". As it iills, the pressure against the end ofthe plunger D causes it to move in the opposite direction, at the sametime vforcing the water out ot the compartment in the opposite end ofthe case through one of the passages I into and out ol' the discharge J.Then the plunger E has finished its stroke, it brings one ol the oblongopenings in the hollow plunger D immediately over one of the passages f,which allows the Water in the end of the plunger D to pass out While theopposite end is-being.

Filled, and the plunger thereby forced in the opposite direction. As theplunger E Completes its stroke, the flange n comes in lcontact with andmoves one of the tappets, causing the other on the opposite end oftherod to shift the valve. The plunger D is then moved in the oppositedirection by the Water passing in behind it and carrying with it theplunger E the length of its stroke, after which the plunger E makes astroke in the same direction. The plungerD having a greaterarea than theplunger E when working slowly, might commence a reverse movement beforethe plunger E had completed its stroke, caus ing a slight error inmeasurement. To prevent this, latches m are provided which catch overthe flanges and hold the plunger D at the end of each stroke until'the'plungerE has completed its stroke and caused the sliding rod to open thelatch at the end of the stroke.

, In the above described construction ot' mcter no Water can possiblypass out of the meter Without moving one of the plungers and beingmeasured, and there is no position in which the plunger can be placedthat will prevent the Water from flowing.

Having thus described my invention, what Iy claim as new, and desire tosecure by Letters Patent` isl. The combination of the two plungers E D,fitted to Work one within and independent of the other, the outerplunger acting as a cylinder-into which the water passes to actuate thefirst and to be measured with the compartments B B B, and passages I Iand ff, arranged and operating substantially in the manner' described.

2. The latches m, in combination with the plunger' D, iianges a, andtappets 7c k, when arranged and operating in the vmanner and for thepurposes described.

BENJ. S. CHURCH.

\\f'it1iesses:

RICHARDSON GAWLEY, J AMES LAIRD.

